🩻 Carotid Vulnerable-Plaque Feature Assessment
This tool assesses carotid-plaque vulnerability as a checklist of high-risk imaging features, modifying stroke risk beyond stenosis degree.
Clinical takeaway
Vulnerable features, especially intraplaque hemorrhage, predict ipsilateral stroke independently of stenosis degree, so similar stenosis can carry different risk. (original synthesis · not guideline verbatim)
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When to use
Use to tally vulnerable features (IPH, large lipid core, thin/ruptured cap, ulceration, ultrasound hypoechogenicity) and gauge plaque instability.
How it works
Count high-risk features: 0 → no definite vulnerability, 1 → vulnerable features present, ≥ 2 → highly vulnerable. Intraplaque hemorrhage carries particular weight.
Key points
- Vulnerable features, especially intraplaque hemorrhage, predict ipsilateral stroke independently of stenosis degree, so similar stenosis can carry different risk. (original synthesis · not guideline verbatim)
- The modified AHA-MRI Type VI denotes complex plaque with hemorrhage, thrombus, or cap rupture.
- This is a feature checklist, not a validated score, and supplements rather than replaces image interpretation.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Intraplaque hemorrhage IPH (MRI T1/MPRAGE hyperintensity) | Absent |
|---|---|
| Large lipid-rich necrotic core LRNC | Absent |
| Thin / ruptured fibrous cap | Absent |
| Plaque ulceration | Absent |
| Ultrasound hypoechogenicity/heterogeneity/juxtaluminal black area (JBA) | Absent |
→Vulnerable high-risk features0 features · no definite vulnerable features
- Positive features：none
- Significance：Vulnerable-plaque features (especially IPH) predict ipsilateral ischemic stroke risk independently of stenosis degree; the modified AHA-MRI classification Type VI = complex plaque (hemorrhage/thrombus/cap rupture). Multiple positives suggest instability.
- Decision aid：At similar stenosis, those with high-risk features such as IPH/ruptured cap have higher stroke risk, which can modify intensified medical therapy or (with symptoms and stenosis) revascularization assessment; asymptomatic patients especially need individualized weighing.
| Intraplaque hemorrhage IPH (MRI T1/MPRAGE hyperintensity) | Present |
|---|---|
| Large lipid-rich necrotic core LRNC | Present |
| Thin / ruptured fibrous cap | Present |
| Plaque ulceration | Present |
| Ultrasound hypoechogenicity/heterogeneity/juxtaluminal black area (JBA) | Present |
→Vulnerable high-risk features5 features · highly vulnerable (multiple high-risk features)
- Positive features：intraplaque hemorrhage (IPH), large lipid-rich necrotic core (LRNC), thin/ruptured fibrous cap, plaque ulceration, ultrasound hypoechogenicity/heterogeneity/juxtaluminal black area
- Significance：Vulnerable-plaque features (especially IPH) predict ipsilateral ischemic stroke risk independently of stenosis degree; the modified AHA-MRI classification Type VI = complex plaque (hemorrhage/thrombus/cap rupture). Multiple positives suggest instability.
- Decision aid：At similar stenosis, those with high-risk features such as IPH/ruptured cap have higher stroke risk, which can modify intensified medical therapy or (with symptoms and stenosis) revascularization assessment; asymptomatic patients especially need individualized weighing.
Frequently asked questions
- What is Carotid Vulnerable-Plaque Feature Assessment?
- This tool assesses carotid-plaque vulnerability as a checklist of high-risk imaging features, modifying stroke risk beyond stenosis degree.
- How is Carotid Vulnerable-Plaque Feature Assessment calculated? What is the core formula?
- Count high-risk features: 0 → no definite vulnerability, 1 → vulnerable features present, ≥ 2 → highly vulnerable. Intraplaque hemorrhage carries particular weight.
- When is Carotid Vulnerable-Plaque Feature Assessment used?
- Use to tally vulnerable features (IPH, large lipid core, thin/ruptured cap, ulceration, ultrasound hypoechogenicity) and gauge plaque instability.
- What are the key clinical points for Carotid Vulnerable-Plaque Feature Assessment?
- Vulnerable features, especially intraplaque hemorrhage, predict ipsilateral stroke independently of stenosis degree, so similar stenosis can carry different risk. (original synthesis · not guideline verbatim) The modified AHA-MRI Type VI denotes complex plaque with hemorrhage, thrombus, or cap rupture. This is a feature checklist, not a validated score, and supplements rather than replaces image interpretation.
- What are the limits and cautions when using Carotid Vulnerable-Plaque Feature Assessment?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- How is Carotid Vulnerable-Plaque Feature Assessment calculated in practice? Can you show a worked example?
- Inputs: Intraplaque hemorrhage IPH (MRI T1/MPRAGE hyperintensity) Absent, Large lipid-rich necrotic core LRNC Absent, Thin / ruptured fibrous cap Absent, Plaque ulceration Absent, Ultrasound hypoechogenicity/heterogeneity/juxtaluminal black area (JBA) Absent → Result: Vulnerable high-risk features 0 features · no definite vulnerable features（Positive features: none, Significance: Vulnerable-plaque features (especially IPH) predict ipsilateral ischemic stroke risk independently of stenosis degree; the modified AHA-MRI classification Type VI = complex plaque (hemorrhage/thrombus/cap rupture). Multiple positives suggest instability., Decision aid: At similar stenosis, those with high-risk features such as IPH/ruptured cap have higher stroke risk, which can modify intensified medical therapy or (with symptoms and stenosis) revascularization assessment; asymptomatic patients especially need individualized weighing.） Inputs: Intraplaque hemorrhage IPH (MRI T1/MPRAGE hyperintensity) Present, Large lipid-rich necrotic core LRNC Present, Thin / ruptured fibrous cap Present, Plaque ulceration Present, Ultrasound hypoechogenicity/heterogeneity/juxtaluminal black area (JBA) Present → Result: Vulnerable high-risk features 5 features · highly vulnerable (multiple high-risk features)（Positive features: intraplaque hemorrhage (IPH), large lipid-rich necrotic core (LRNC), thin/ruptured fibrous cap, plaque ulceration, ultrasound hypoechogenicity/heterogeneity/juxtaluminal black area, Significance: Vulnerable-plaque features (especially IPH) predict ipsilateral ischemic stroke risk independently of stenosis degree; the modified AHA-MRI classification Type VI = complex plaque (hemorrhage/thrombus/cap rupture). Multiple positives suggest instability., Decision aid: At similar stenosis, those with high-risk features such as IPH/ruptured cap have higher stroke risk, which can modify intensified medical therapy or (with symptoms and stenosis) revascularization assessment; asymptomatic patients especially need individualized weighing.）